*{
    margin: 0;
    padding: 0;
}

#header {
    width: 100%;
    height: 80px;
}
.search{
    width: 940px;
    height: 80px;
    margin: 0 auto;
}
.logo{
    display: block;
    width: 144px;
    height: 80px;
    background-image: url(../imgs/logo.png);
    background-size: 144px 80px;
    float: left;
}

.menu{
    width: 300px;
    height: 80px;
    float: left;
    list-style: none;

}

.item{
    width: 100px;
    height: 80px;
    float: left;
    text-align: center;
    line-height: 80px;
    border-top: 2px white solid;
}
.item a{
    text-decoration: none;
}
.item a:link,.item a:visited {
        color: #5e687d;
        
}
.item:hover{
    color: #00a4f0;
    background-color: #f8f8f8;
    border-top: 2px #00a4f0 solid;
    box-sizing:border-box;
}

.myform{
    width: 414px;
    height: 40px;
    float: right;
    margin-top: 25px;

}

.inp{
    width: 360px;
    height: 36px;
    line-height: 36px;
    padding: 15px;
    border: 2px solid #33acff;
    border-radius: 2px;
    float: left;
}


.inp:focus{
    border: 2px solid #33acff;
    outline: none;
    
}
.btn{
    width: 38px;
    height: 36px;
    border: none;
    background-image: url(../imgs/icon.png) ;
    background-size: 25px 25px;
    background-color: #33acff;
    background-repeat: no-repeat;
    background-position: center center;
    float: left;
    
}

#content{
    width: 100%;
    height: 429px;
    background-image: url(../imgs/back.png);
}
 .clearfix::before,
 .clearfix::after {
     content: "";
     display: table;
     clear: both;
 }

.box{
    width: 960px;
    height: 315px;
    background-color: red;
    margin:50px auto;
}

.l_left{
    width: 520px;
    height: 319px;
    background-image: url(../imgs/left.png);
}

.list{
    width: 100%;
    height: 204px;
    background-color: #00a4f0;
}

.list_item01{
    width: 960px;
    height: 204px;
    background-color: green;
    margin: 0 auto;
}
.kuai{
    width: 220px;
    height: 204px;
    background-color: red;
    float: left;
    margin-left: 10px;
    margin-right: 10px;
}